On Sun, Mar 29, 2020 at 2:41 PM Jason Andryuk jandryuk@gmail.com wrote:
From: Johannes Berg johannes.berg@intel.com
commit 7937fd3227055892e169f4b34d21157e57d919e2 upstream.
The code now compiles without ACPI, but there's a warning since iwl_mvm_get_ppag_table() isn't used, and iwl_mvm_ppag_init() must not unconditionally fail but return success instead.
Signed-off-by: Johannes Berg johannes.berg@intel.com Signed-off-by: Luca Coelho luciano.coelho@intel.com Signed-off-by: Kalle Valo kvalo@codeaurora.org [Drop hunk removing iwl_mvm_get_ppag_table() since it doesn't exist in 5.4] Signed-off-by: Jason Andryuk jandryuk@gmail.com
A 5.4 kernel can't "up" an iwlwifi interface when CONFIG_ACPI=n. `wpa_supplicant` or `ip link set wlan0 up` return "No such file or directory". The non-acpi stub iwl_mvm_ppag_init() always returns -ENOENT which means iwl_mvm_up() always fails. Backporting the commit lets iwl_mvm_up() succeed.
This stable request is only applicable to 5.4
Fixes 6ce1e5c0c207 "iwlwifi: support per-platform antenna gain"
-Jason